Results 21 to 30 of about 917,448 (310)

Voltammetric Electrochemical Behavior of Carbon Paste Electrode Containing Intrinsic Silver for Determination of Cysteine

open access: yesChemosensors, 2022
In this paper, the electrochemical behavior of cysteine is described, using carbon paste electrodes (CPEs) modified with ternary silver-copper sulfide containing intrinsic silver at two pH values (pH 3 and 5).
Maša Buljac   +4 more
doaj   +1 more source

Chemo-selective modification of cysteine residue: synthesis and application in the discovery of potential drug candidates [PDF]

open access: yesExploration of Drug Science
Chemo-select modification of peptides, targeting a handful of the most reactive proteinogenic amino acids (AAs), is gradually utilized to address the medical needs of peptide drugs and biopharmaceuticals.
Yanyan Liao, Xuefeng Jiang
doaj   +1 more source

The versatile utility of cysteine as a target for cancer treatment

open access: yesFrontiers in Oncology, 2023
Owing to its unique nucleophilicity, cysteine is an attractive sulfhydryl-containing proteinogenic amino acid. It is also utilized in various metabolic pathways and redox homeostasis, as it is used for the component of major endogenous antioxidant ...
Jin-Young Min   +2 more
doaj   +1 more source

Developments in plant breeding for improved nutritional quality of soya beans I. Protein and amino acid content [PDF]

open access: yes, 2000
Soya beans, like other legumes, contain low concentrations of the nutritionally essential sulphur amino acid, methionine. Cysteine, although not an essential amino acid because it can be synthesized from methionine, also influences the nutritional ...
Clarke, E, Wiseman, J
core   +1 more source

Arabidopsis thaliana dehydroascorbate reductase 2 : conformational flexibility during catalysis [PDF]

open access: yes, 2017
Dehydroascorbate reductase (DHAR) catalyzes the glutathione (GSH)-dependent reduction of dehydroascorbate and plays a direct role in regenerating ascorbic acid, an essential plant antioxidant vital for defense against oxidative stress.
Bodra, Nandita   +8 more
core   +1 more source

Multi-vanadium substituted polyoxometalates as efficient electrocatalysts for the oxidation of l-cysteine at low potential on glassy carbon electrodes [PDF]

open access: yes, 2006
The electrochemical behaviours of the sandwich-type complex [As2W18(VO)3O66]11- were studied in a pH 7 medium and compared with those of the three following Dawson-type vanadium-substituted complexes: [P2V2W16O62]8- (P2V2W16), [P2MoV2W15O62]8- (P2MoV2W15)
Contant, Roland   +5 more
core   +5 more sources

Anthelmintic action of plant cysteine proteinases against the rodent stomach nematode, Protospirura muricola, in vitro and in vivo [PDF]

open access: yes, 2007
Cysteine proteinases from the fruit and latex of plants, including papaya, pineapple and fig, were previously shown to have a rapid detrimental effect, in vitro, against the rodent gastrointestinal nematodes, H eligmosomoides polygyrus (which is found in
Behnke, J.M.   +4 more
core   +3 more sources

A Disulfide Bond in the Membrane Protein IgaA Is Essential for Repression of the RcsCDB System

open access: yesFrontiers in Microbiology, 2017
IgaA is an integral inner membrane protein that was discovered as repressor of the RcsCDB phosphorelay system in the intracellular pathogen Salmonella enterica serovar Typhimurium.
M. Graciela Pucciarelli   +4 more
doaj   +1 more source

A dedicated haem lyase is required for the maturation of a novel bacterial cytochrome c with unconventional covalent haem binding [PDF]

open access: yes, 2007
In bacterial c-type cytochromes, the haem cofactor is covalently attached via two cysteine residues organized in a haem c-binding motif. Here, a novel octa-haem c protein, MccA, is described that contains only seven conventional haem c-binding motifs ...
Allen J.W.A.   +17 more
core   +1 more source

Fragmentation of protonated ions of peptides containing cysteine, cysteine sulfinic acid, and cysteine sulfonic acid [PDF]

open access: yesJournal of the American Society for Mass Spectrometry, 2004
The oxidation of the sulfhydryl group in cysteine to sulfenic acid, sulfinic acid, and sulfonic acid in proteins is important in a number of enzymatic processes. In this study we examined the fragmentation of four peptides containing cysteine, cysteine sulfinic acid (Cys-SO(2)H), and cysteine sulfonic acid (Cys-SO(3)H) in an ion-trap mass spectrometer.
Wang, Yinsheng   +3 more
openaire   +2 more sources

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